Metal weather stripping



Aug. 22, 1950 J. P. POSCHEN 2,519,977

METAL WEATHER STRIPPING Filed July 17, 1945 M7/v55: INVENTOR; f BY ATTORNEY Patented Aug. 22, 1950 UNE'EED Marni; WEATHER s'rRrPPIN Julia-s1. Posehen, East Broohline,Pa.

Application July 1'7, 1345, Serial No". Giixijfit My invention relates to an improved form of weather-stripon which a window-sash slides in a window-frame.

An object of my invention is to provide a simple and inexpensive; yet extremely effective, weather strip, having the usual intermediate flange whichfits into a groove in the sash, having two side edges adapted to removably fit into kerfs in the sides of the runway in the window-frame, and having a plurality of tabs struck up at various points along each side edge, for providing sideflanges or shoulders for maintaining the proper spacing between the parting-strip and the moulding when the window-frame is being assembled, and for maintaining the proper alinement of the weather-strip within the runway after the Window-frame has been built. I

1 further object of my invention is to provide a novel form of finished window, having a sash which is thinner than the runways in which it slides, and thinner even than the space between the two side-flanges of the weather-stripping which aligns itself in the runways, so that neither the front nor the back face of the sash rubs against either the side wall of the runway or the alignment-flange which is provided by the weather-stripping, the sash being guided solely by the intermediate flange which is carried by the weather-stripping and which enters into a groove provided in both the right and left sides of the sash, respectively.

With the foregoing and other objects in view, my invention consists in the combinations, structures, assemblies, parts and methods hereinafter described and claimed, and illustrated in the accompanying drawing, wherein:

Figure 1 is a horizontal sectional View illustrating a portion of a sliding window-sash and its frame, equipped with my improved form of weather-strip, and

Figure 2 is a perspective view of one of the weather-strips.

In the drawing, I have shown a wooden window-sash 3, sliding in a runway 4 in a wooden window-frame 5. The side walls of the runway 4 are formed by a parting-strip 6 and a front moulding 7. Y

My novel weather-strip 8, preferably made of sheet-metal, is fitted into the bottom of the runway 4. The weather-strip has two side edges 9 and Hi, which removably fit into kerfs II and I2 which are cut into the side walls of the runway. The weather-strip preferably has corrugations [3 on which the sash slides easily. It has a large double-thickness intermediate flange or tongue it, which fitsinto a longitudinal groovethat side-of the sash 3. The intermediate flange It is not mashed; fiator sharp po-inted, but is-left" ahead 15 on its end, to practically fill the groove iii and thus" to prevent any flow of air, e also guiding thesash as will besubsequentiy ponted out.

According to my present invention, thesaslr 3 is made considerably thinner than the run-ways A in which it slides, and intermediate is of the wea-ther stripping isutiliz'ed as a-gu1dh=- means for guiding the sash and keeping it centered' the runways 5, sothat theback face of the sash is always well spaced from the partingstri p and the front face of the sash is always well spaced the front moulding- 7.

According to my present invention, I utilize special spacingueens for controlling the width of the runway i, or the spacing between the parting-strip s and the front moulding I, when the moulding is first applied to the window-frame, and for thereafter keeping the weather-strip 8 snugly fitted in the runway, so that the intermediate flange it is always spaced a fixed distance from the parting-strip 6, and another fixed distance (usually larger) from the front moulding i. This spacing-means is preferably, although not necessarily, provided by means of a plurality of tabs H which are struck out at various points along each side edge 9 and I0, these tabs being bent at right angles to the side edges 9 and In, so as to fit snugly against the parting-strip 6 and the front moulding 1, respectively. The height of each tab I1 is less than the depth of the runway i. The window-sash is sufficiently narrower than the runway-width to be also narrower than the space between the front and back rows of tabs l i, so that the side edges of the tabs do not score the front and back surfaces of the window-sash.

In operation, the intermediate flanges l 4 on the two Weather-strips t, one on either side of the window, perform an additional guiding-function of maintaining the front and back spacing of the sash with respect to the front and back side-walls of the runways 4, and preferably also with respect to the tabs H, in addition to the usual weather-stripping function of preventing drafts of air from passing around the sides of the window-sash. Since the front surface of the sash is spaced from the front moulding I, there is no danger of scoring the sash-surface on the bead of paint which frequently forms on edge IQ of the moulding i, and since the front and back surfaces of the sash are spaced from the front and back rows of tabs ll, there is no danger of the sash catching, or becoming scored, on these tabs, as the sash is moved up and down.

An extremely free-sliding action of the sash is assured by the, guiding action of the intermediate flange M, which provides a wood-on-metal sliding-contact which has a very low friction and which constitutes the only front-and-back sliding-contact made by the sash as it slides up and down.

An unblemished appearance is assured by the freedom from scoring the surface-finish of the sash as it slides up and down.

The use of struck-up tabs on the weatherstripping provides an extremely inexpensive construction, involving a one-piece stampedsheet-metal construction, utilizing a minimum amount of metal in the manufacture of the weather-stripping.

While I have illustrated my invention in a single preferred form of construction, embodying several improved features, I wish it to be understood that I am not limited to the use of all of the features at once, or to the specific forms of the several features, which have been chosen for illustration. I desire, therefore, that the appended claims shall be given the broadest construction consistent with their language.

I claim as my invention:

1. The combination, with a window-frame having a runway on each side, and a windowsash having a longitudinally extending groove in each side, of a weather-strip fitting into the bottom of each runway and having an intermediate flange which enters the groove on that side of the sash, and strip-retaining means for retaining each weather-strip in its runway in such position that said intermediate flange is maintained at fixed distances from the front and back sides of the runway, respectively, said combination being characterized by the sash being considerably thinner than the width of the runway, and the sash being centered and guided by said intermediate flanges, whereby the slidingcontacts between the intermediate flanges and their respective sash-grooves constitute the only front-and-back sliding-contact made by the sash as it slides up and down, said strip-retaining means comprising kerfs in the sides of each runway, side edges of the weather-strips removably fitting in said kerfs, and a bent-up side-flange construction on each side of each weather-strip, said side-flange constructions being spaced from the side edges of the weather-strip and fitting snugly against the front and back sides of their runway, the thickness of the sash being sufficiently less than the distance between the front and back side-flanges of each strip, so that there is no sliding friction on these side-flanges as the sash is moved up and down.

2. The combination as defined in claim 1, characterized by said side-flange constructions comprising a plurality of longitudinally spaced, struck-up tabs on each side of each weatherstrip, said tabs being spaced from the side edges of the weather-strip and fitting snugly against the front and back sides of their runway.

JULIUS P. POSCHEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 786,972 Kenny Apr. 11, 1905 1,525,540 Glaser Feb. 10, 1925 2,100,556 Van Fleet Nov. 30, 1937 2,374,623 Sale Apr. 24, 1945 

